Air dryer canister mounted to the chassis frame

Axle Repair

Heavy-Duty Axle Repair — KY/TN On-Site

Call (931) 561-7736 Request service

Based in Russellville, KY · 75-mile radius

Symptoms we look for

You hear

· Whining from the rear that gets worse with speed
· Clunking when you let off the throttle
· Grinding under load uphill

You see

· Oil sheen behind the wheels
· Black streaks down the hub face
· Glittering metal in the differential oil

You smell

· Burnt gear oil
· Hot metal smell at the wheel-end

What we cover

Wheel seal replacement (drive axle and trailer)
Hub bearing diagnosis, replacement, and re-pack
Axle shaft replacement (drive and trailer)
Differential oil change and inspection
Differential pinion seal replacement
Ring-and-pinion replacement (limited — see FAQ on shop vs roadside)
Trailer axle wheel-end service

How we handle it

Wheel seal leaks are the most common axle call we get. The fix is straightforward when you catch it early — pull the hub, replace the seal, repack the bearings, button it back up. If the seal has been leaking for thousands of miles the bearings are usually compromised too and that's a bigger ticket. We diagnose first: pop the hub cap, look at the oil level and color, check for end-play in the bearings, look at the seal. If we can do the repair in your yard, we will. If the truck has been losing oil for a long time and the differential gears are scored, we'll tell you straight what the options are.

Parts & warranty

Wheel seals from National, Stemco, or SKF — the standards. Bearings from Timken or SKF. Axle shafts OEM when the engine maker spec demands it; quality aftermarket otherwise. 1-year parts-and-labor warranty on the work.

Related services

Other repairs

Coverage by city

Axle Repair on-site in the cities below. Each link goes to the per-city page with localized response details.

Request service

Request axle repair

Tell us what's going on and we'll call you back. For roadside emergencies, the fastest path is to call (931) 561-7736.

Real work, real shop

Frequently asked

Can you replace a broken axle shaft roadside?

Most of the time yes, if it's a straight shaft replacement and not a full housing failure. Drive-axle shafts are heavier work but doable in your yard. Trailer axle shafts are easier.

How much does a wheel-seal job cost?

Single wheel-end including the seal and any bearings that show damage typically runs $350–$600. If both bearings need replaced and we're rebuilding the wheel-end fully it can go higher. We give you the firm number after we pull the hub and look.

My differential is whining — is that always a major repair?

Not always. Whining can be low oil, contaminated oil, or worn pinion bearings — all of which are field-fixable. It can also be ring-and-pinion damage which is a shop job. Diagnosis is cheap and tells us which it is.

Can you set up a ring-and-pinion on-site?

No. Ring-and-pinion needs precision lash and contact-pattern setup that's a shop job with the right fixtures. We can pull the differential and send the housing to a specialist for the rebuild.

What customers say

4.7 / 5 from 43 Google reviews

“Brennan was great — absolutely hire this guy. I own a local tree company in Goodlettsville and one of my work trucks broke down at short notice. He was able to get there within a day or two and diagnose it. My turbo went out on one of my vehicles — when I went to the dealership they told me the wait time was forever and the process would include taking the cab off, which wouldn't work well with my current setup. Within one day he was able to replace my turbo and get it running so I could get back in business. The job was really labor-intensive but he made quick work of it and it runs even better than it did before. He's now the main guy I go to.”

— Tyler M.
“We've used Blacktop Mobile Repair twice this month, and both experiences have been nothing short of amazing. They run a top-notch operation, and it really shows in the quality of service and professionalism they provide. Jacob, the service tech, went above and beyond to make sure our truck was taken care of. He even drove out of his way to make sure he had the exact part needed to fix the truck and get us back on the road quickly. That level of dedication and commitment is hard to find. As a trucking company, downtime is costly, and having a team like Brennan and Jacob we can rely on makes all the difference.”

— Matthew P.
“I've used these guys in the past for an air compressor installation. Jacob was great. And recently my alternator quit on the weekend. I called Jacob on a Saturday and he helped me find one that I could pick up myself. Both times Jacob was knowledgeable & fair. A few months later — again on a Saturday — I wasn't even in their area and I called again to get troubleshooting advice. They are very good at diagnosing. Was able to pinpoint the trouble. Thanks again guys!”

— Dennis W.

Read all 43 reviews on Google